Temperature and precipitation anomalies over Brazil during the 1995 winter season: atmospheric and oceanic characteristics

Pezzi, Luciano Ponzi; Cavalcanti, Iracema F. A.

doi:10.1590/s0102-261x1998000200008

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Extreme Summers Precipitation Analysis1

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2010

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“…Rossby wavetrain propagation from the tropical Indian Ocean directed to South America was discussed by Saji et al (2005) when analyzing relations between the Indian Ocean Dipole and surface air temperature. The wavetrain pattern from Southeastern Pacific to the continent is similar to that found in blocking events over Southeastern Pacific (Sinclair 1996;Pezzi and Cavalcanti 1998).…”

Section: Extreme Summers Precipitation Analysissupporting

confidence: 76%

Extreme precipitation over Southeastern Brazil in the austral summer and relations with the Southern Hemisphere annular mode

Vasconcellos

Cavalcanti

2010

Atmospheric Science Letters

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Southeastern Brazil is a highly industrialized and populated region which largely contributes to the country's economy. Extreme precipitation over this region can cause floods and landslides occurrences or lack of precipitation that can affect many sectors of economy. The objective of this work is to identify atmospheric characteristics associated with austral summer extreme precipitation over part of Southeastern Brazil. The atmospheric characteristics obtained from wet and dry composites suggest that extreme precipitation was associated with anomalous circulation over the region, forced by a PSA-like wavetrain intensified by the Southern Annular Mode.

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Section: Extreme Summers Precipitation Analysissupporting

confidence: 76%